51334311951 has 32 divisors (see below), whose sum is σ = 81922417920. Its totient is φ = 31582045152.

The previous prime is 51334311947. The next prime is 51334311979. The reversal of 51334311951 is 15911343315.

51334311951 is a `hidden beast` number, since 5 + 1 + 33 + 431 + 195 + 1 = 666.

It is not a de Polignac number, because 51334311951 - 2² = 51334311947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51334311911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1486260 + ... + 1520406.

It is an arithmetic number, because the mean of its divisors is an integer number (2560075560).

Almost surely, 2^51334311951 is an apocalyptic number.

51334311951 is a deficient number, since it is larger than the sum of its proper divisors (30588105969).

51334311951 is a wasteful number, since it uses less digits than its factorization.

51334311951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38452 (or 38446 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The spelling of 51334311951 in words is "fifty-one billion, three hundred thirty-four million, three hundred eleven thousand, nine hundred fifty-one".